The Marker, Spiral and Locked Groove. How a LP Record is Cut.

Ever wonder how the spaces between tracks are made on a vinyl record? In this video, Scott and Garrett discuss that and more as they explore what goes into cutting a record.

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4:44 - On the original pressing of Aenima by Tool, the track "Useful Idiot" (itself the sound of a noisy repeating locked groove) not only continues into the locked groove of Side 1, it also resumes in the lead-in of Side 2, before the next song begins.